1213000202091 has 16 divisors (see below), whose sum is σ = 1636366153248. Its totient is φ = 799180128000.

The previous prime is 1213000202069. The next prime is 1213000202093. The reversal of 1213000202091 is 1902020003121.

It is not a de Polignac number, because 1213000202091 - 2⁵ = 1213000202059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213000202093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535986 + ... + 3863831.

It is an arithmetic number, because the mean of its divisors is an integer number (102272884578).

Almost surely, 2^{1213000202091} is an apocalyptic number.

1213000202091 is a deficient number, since it is larger than the sum of its proper divisors (423365951157).

1213000202091 is a wasteful number, since it uses less digits than its factorization.

1213000202091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400462.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 1213000202091 in words is "one trillion, two hundred thirteen billion, two hundred two thousand, ninety-one".